/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2017-09-12     Bernard      The first version
 */

#ifndef LIBC_SIGNAL_H__
#define LIBC_SIGNAL_H__

#ifdef __cplusplus
extern "C" {
#endif

#ifdef HAVE_CCONFIG_H
#include <cconfig.h>
#endif

#ifndef HAVE_SIGVAL
/*  Signal Generation and Delivery, P1003.1b-1993, p. 63
    NOTE: P1003.1c/D10, p. 34 adds sigev_notify_function and
          sigev_notify_attributes to the sigevent structure.  */

union sigval {
    int sival_int;   /* Integer signal value */
    void* sival_ptr; /* Pointer signal value */
};
#endif

#ifndef HAVE_SIGEVENT
struct sigevent {
    int sigev_notify;         /* Notification type */
    int sigev_signo;          /* Signal number */
    union sigval sigev_value; /* Signal value */
    void (*sigev_notify_function)(union sigval);
    /* Notification function */
    void*
        sigev_notify_attributes; /* Notification Attributes, really pthread_attr_t */
};
#endif

#ifndef HAVE_SIGINFO
struct siginfo {
    rt_uint16_t si_signo;
    rt_uint16_t si_code;

    union sigval si_value;
};
typedef struct siginfo siginfo_t;
#endif

#define SI_USER 0x01  /* Signal sent by kill(). */
#define SI_QUEUE 0x02 /* Signal sent by sigqueue(). */
#define SI_TIMER \
    0x03 /* Signal generated by expiration of a
                               timer set by timer_settime(). */
#define SI_ASYNCIO \
    0x04 /* Signal generated by completion of an
                               asynchronous I/O request. */
#define SI_MESGQ \
    0x05 /* Signal generated by arrival of a
                               message on an empty message queue. */

#ifdef RT_USING_NEWLIB
#include <sys/signal.h>
#endif

#if defined(__CC_ARM) || defined(__CLANG_ARM)
#include <signal.h>
typedef unsigned long sigset_t;

#define SIGHUP 1
/* #define SIGINT       2 */
#define SIGQUIT 3
/* #define SIGILL       4 */
#define SIGTRAP 5
/* #define SIGABRT      6 */
#define SIGEMT 7
/* #define SIGFPE       8 */
#define SIGKILL 9
#define SIGBUS 10
/* #define SIGSEGV     11 */
#define SIGSYS 12
#define SIGPIPE 13
#define SIGALRM 14
/* #define SIGTERM     15 */
#define SIGURG 16
#define SIGSTOP 17
#define SIGTSTP 18
#define SIGCONT 19
#define SIGCHLD 20
#define SIGTTIN 21
#define SIGTTOU 22
#define SIGPOLL 23
#define SIGWINCH 24
/* #define SIGUSR1     25 */
/* #define SIGUSR2     26 */
#define SIGRTMIN 27
#define SIGRTMAX 31
#define NSIG 32

#define SIG_SETMASK 0 /* set mask with sigprocmask() */
#define SIG_BLOCK 1   /* set of signals to block */
#define SIG_UNBLOCK 2 /* set of signals to, well, unblock */

typedef void (*_sig_func_ptr)(int);

struct sigaction {
    _sig_func_ptr sa_handler;
    sigset_t sa_mask;
    int sa_flags;
};

#define sigaddset(what, sig) (*(what) |= (1 << (sig)), 0)
#define sigdelset(what, sig) (*(what) &= ~(1 << (sig)), 0)
#define sigemptyset(what) (*(what) = 0, 0)
#define sigfillset(what) (*(what) = ~(0), 0)
#define sigismember(what, sig) (((*(what)) & (1 << (sig))) != 0)

int sigprocmask(int how, const sigset_t* set, sigset_t* oset);
int sigaction(int signum, const struct sigaction* act,
              struct sigaction* oldact);

#elif defined(__IAR_SYSTEMS_ICC__)
#include <signal.h>
typedef unsigned long sigset_t;

#define SIGHUP 1
#define SIGINT 2
#define SIGQUIT 3
#define SIGILL 4
#define SIGTRAP 5
/* #define SIGABRT      6 */
#define SIGEMT 7
#define SIGFPE 8
#define SIGKILL 9
#define SIGBUS 10
#define SIGSEGV 11
#define SIGSYS 12
#define SIGPIPE 13
#define SIGALRM 14
#define SIGTERM 15
#define SIGURG 16
#define SIGSTOP 17
#define SIGTSTP 18
#define SIGCONT 19
#define SIGCHLD 20
#define SIGTTIN 21
#define SIGTTOU 22
#define SIGPOLL 23
#define SIGWINCH 24
#define SIGUSR1 25
#define SIGUSR2 26
#define SIGRTMIN 27
#define SIGRTMAX 31
#define NSIG 32

#define SIG_SETMASK 0 /* set mask with sigprocmask() */
#define SIG_BLOCK 1   /* set of signals to block */
#define SIG_UNBLOCK 2 /* set of signals to, well, unblock */

typedef void (*_sig_func_ptr)(int);

struct sigaction {
    _sig_func_ptr sa_handler;
    sigset_t sa_mask;
    int sa_flags;
};

#define sigaddset(what, sig) (*(what) |= (1 << (sig)), 0)
#define sigdelset(what, sig) (*(what) &= ~(1 << (sig)), 0)
#define sigemptyset(what) (*(what) = 0, 0)
#define sigfillset(what) (*(what) = ~(0), 0)
#define sigismember(what, sig) (((*(what)) & (1 << (sig))) != 0)

int sigprocmask(int how, const sigset_t* set, sigset_t* oset);
int sigaction(int signum, const struct sigaction* act,
              struct sigaction* oldact);
#endif

#ifdef __cplusplus
}
#endif

#endif
